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H. C. ELLIS.

GRAIN DRIER.

APPLICATION FILED JAN. 2. 1919.

1,313,279- Patented Aug. 19, 1919. w I 70 mi Q ala 22 it :1 25% H. c. ELLIS.

GRAIN DRIER.

APPLICATION FILED JAN. 2, 1919.

3 SHEETS-SHEET 2.

H. c. ELLIS.

GRAIN DRIER.

APPLICATION FILED m4. 2. 1919.

Patented Aug. 19, 1919.

3 SHEETS-SHEET 3.

T I W UNITED srnwunr OFFICE.

HUBERT C. ELLIS, OF EVAN STON, ILLINOIS, ASSIGNOR TO ELLIS DRIER & ELEVATOR COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF WISCQNSIH.

GRAIN-DRIER.

Specification of Letters Patent.

, Patented Aug. 19,1919.

To all whom it may concern:

Be it known that I, HUBERT C. ELLIS, a subject of the King of Great Britain, and a resident of Evanston, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Grain- Driers, of which the following is a full, clear, and exact description.

The invention relates to grain driers.

One object of the invention is to provide an improved drier in which the air is heated before it enters the fan and after it has passed through the fan so that the atmospheric resistance of the heaters in the intake and discharge for the fan will be substantially equal.

A further object of the invention is to provide an improved grain drier in which exhaust and pressure ducts between the drier and the fan are compactly arranged and in which there is a common dividing wall between these ducts for heat conservation.

A further object of the invention is to provide a heater which is common to the pressure of said ducts for economy in cost of installation.

Other objects of the invention will appear from the specification.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclu= sion hereof. r

In the drawings: Figure 1 is a side elevation of a drier embodying the invention. Fig. 2 is an elevation of a portion of the other side. Fig. 3 is a vertical longitudinal section. Fig. at is a section taken on line H of Fig. 3.

The invention is illustrated as applied to a grain drier of the vertical shaft type, such as is exemplified in Patent No. 1,127,97i, and which comprises a series of grain shafts, transverse inlet and exhaust flues between the shafts and opening into them, the inlet fiues being open at one end and the exhaust flues being 0 en at the other end, to cause the air to be orced through the grain shafts. Since the construction of these flues does not form any part of the present invention, it is not deemed necessary to describe them in detail.

The improved drier comprises an upper section 5, which is adapted to serve as a drier, and a lower section 6 which is adapted to serve as a cooler, the grain shafts of the sections being alined so that the grain from the shafts in the drier section will pass into the shafts of the cooler section," as well understood in the art. A fan 7 is provided for forcing air through the drier, and the outlet 18 of this fan is connected to the trunk 9- 0f the supply duct 10 which connects the discharge of the fan to all of the inlets of the pressure fiues in the drier-section 5. From these flues, the air is forced through the shafts of grain and into the exhaust ducts, from which the air passes to the opposite ends of the drier into the drier room or compartment 11. This compartment 11 serves as a supply chamber for the inlet ducts of the cooler section 6. The outlet fines in the cooler section 6 are in communi cation with a duct 12 which is connected by a trunk 13 with the eye or inlet of the fan 7. A transverse partition 14 forms a common dividing wall between the ducts 1-0 and 12. A radiator is built up of sections desired number and each section comprises a base 16, and vertical pipes 15 which extend across both of the ducts l2 and 10 and through partition 14. Each base 16 is provided with a live steam chamber 17 to which steam is supplied and towhi-ch are connectedsmallinner pipes l), an outlet chamber 20, to which are connected the outer radiator pipes 15. The upper ends of the outer pipes 15 are closed, as at 23, and the inner pipes 19 terminate a short distance from the closed ends. A return pipe 22 is connected to each chamber 20 and a supply pipe 18 is connected to each chamber 17. Live steam supplied to each chamber 17 passes upwardly through inner pipes 19 into the outer pipes 15 and the condensation and exhaust pass through chamber 20 to a return pipe 22. All of the branch pipes 18' are connected to a common steam supply pipe 24: and the exhaust pipes 22 are connected to a common exhaust pipe 25. The bases 16 are formed so that any desired number may be secured together to build up a radiator of the desired heating capacity.

In operation, the fan 7 'will force air through the supply duct 9 through the inlet fines of the drier section 5, the grain and outlet fiues and into the compartment 11.

At the same time, air from compartment 11 will be drawn through the flues and grain in cooler "section 6 into the return duct 12. and into the eye of the fan.

By locating the exhaust and discharge ducts forthe fan so there is a common dividing Wall between them, a compact arrangement is attained which is advantageous in many places and a saving of heat units is effected, because any heat passing through the partition from the pressure duct into the suction ductwill be conserved. An important advantage in the use of a radiator extending through both the suction and pressure duct is that a material saving in the cost of installation is effected, because a single base'serves for the heater pipes in both ducts. A characteristic advantage of employing heater pipes in the intake and pressure ducts is that the atmospheric resistance causes the heaters to be substantially balanced in the inlet and outlet for the fan and a material saving in the cost of operation is effected.

The invention is not to be understood as restricted to the-details set forth, since these may be modified Within the scope of the appended claims, Without departing from the spirit and scope of the invention.

Having thus described the invention, What I claim as new and desire to secure by Letters Patent, is:

1. In a grain drier, the combination of a grain shaft, a fan for forcing air through the shaft, intake and outlet ducts for the fan, and airheating means in both of said duct-s whereby the atmospheric resistance in said ducts will be substantially balanced.

2. In a grain drier, the combination of a plurality of drier sections, a fan for forcing air through the sections, an intake for the Copies of this patent may be obtained for 4. In a grain drier, the combination with a grain-shaft, a fan for forcing air through said shaft, a plurality of ducts connected to the fan, and a heater comprising a base and a series of pipes connected to said base and extending continuously across both of said ducts.

5. In a grain drier, the combination with a grain shaft, a fan for forcing air through said shaft, intake and outlet ducts for the fan, both connected to said shaft, and a heater comprising a base and a series of pipes connected to said base and extending continuously across both of said ducts.

6. In a grain drier, the combination of a drier section, a cooler section, a fan, an air duct from the outlet of the fan to the drier section, a duct from the cooler section to the inlet of the fan, said duets having a common dividing Wall, and means for heating the air in both of said passages.

7. In a grain drier, the combination of a drier section, a cooler section, a fan, an air duct from the outlet of the fan to the drier section, a duct from the cooler section to the inlet of the fan, said ducts having a common dividing wall, and a. heater comprising pipes extending continuously across both of said passages.

HUBERT C. ELLIS.

five cents each, by addressing the Commissioner of Patents. Washington, D. 0." 

